Week 5 Assessment: Work, Power, and Simple Machines

What is the formula for work?

• W = m × a

• W = F × d

• W = P ÷ t

• W = d ÷ F

What are the units of work in physics?

• Watts

• Newtons

• Joules

• Kilograms

If a person applies 10 N of force to move a box 3 meters, how much work is done?

• 30 J

• 13 J

• 3 J

• 0 J

What is power in physics?

• Energy used by light

• Rate at which force is applied

• Rate at which work is done

• Total distance traveled

What is the unit for power?

• Newton

• Joule

• Watt

• Meter

Which of the following is NOT a simple machine?

• Lever

• Pulley

• Screwdriver

• Computer

How does a simple machine make work easier?

• By increasing energy

• By changing force or direction

• By reducing friction

• By adding mass

Which simple machine is used in a flagpole system?

• Inclined plane

• Pulley

• Lever

• Screw

What type of simple machine is a ramp?

• Lever

• Pulley

• Inclined plane

• Screw

A screwdriver twisting into a screw is an example of which simple machine?

• Lever

• Wedge

• Screw

• Pulley